I know, not environmental, but I find G+ so fascinating I’m compelled to share this amazing website. Well worth your time. (Oh, an hit me up if you need an invite).
Update: Yes, it’s true I’m reeeaallllyyy giving out G+ invites like candy. (Bigups to Shah@crookedindifference.)
This site is a fantastic resource that you can search to find public profiles on Google+. Don’t miss the stats page. It’s clear from the data that G+ is unabashedly tech-centric right now. It’s heavy with engineering types.